Flow Control of Gear Pump

[RNeumann]

Thanks for that information. So as the spool moves into the work position, the pressure rise is variable? The varying of the pressure/spool valve is what increases or decreases the speed of the FEL cylinders opening and closing? For the sake of argument, if a backhoe and FEL are to be utilized off the same Fixed displacement gear pump (not running at the same time), yet one operates at 10 gpm and the other at 15 gpm, how does one reconcile the different needs of each implement? Essentially they will both function, but will respond to the spool valves in different ways?

This is the “magic” of the open center control valve. Spend some time on YouTube so you can get a visual. Basically fluid is always moving through the valve. It’s just redirected as needed. Valves are rated for max gpm flow. A bigger valve will work with lower flow pumps but a small valve with a high gpm pump will restrict flow and create the heat you are concerned about.

open center valve - YouTube